Heel-trimming machine



(No Model.)

H. W. WINTER. HEEL TRIMMING MACHINE.

No. 447,744. Patented Mar. 3,-1891.

ATENT Qrrrcn.

HENRY WV. XVINTER, OF BOSTON, MASSACHUSETTS.

HEEL-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 447,744, dated March 3, 1891. Application filed February 3, 1888. Serial No. 262,871. (No model.)

To all whom it may concern:

Be it known that I, HENRY \V. INTER, of

Boston, county of Suffolk, and State of Massaohusetts, have invented an Improvement in Heel-Trimming Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has forits object to provide a heel-trimming machine of that class e1nploying a rotary cutter with a rand-guard and rand-cutter of improved construction.

In my invention the rand-guard is made movable in the arc of a circle to uncover more or less of the rotary cutter, that depending upon the portion of the heel being trimmed, the extent of the movement of the rand-guard depending upon the difference in the height of the heel between its breast end and its rear side, the rand-guide moving in the arc of a circle of greater or less diameter, that depending upon the curvature of the heel.

My improved rand-guard made as a cylinder is pivoted upon parallel arms, the position of which may be adjusted more or less from the line of the axis of rotation of the cutter, to thus vary the arc in which the randguard is free to move for a limited distance, the said distance being variable by suitable stops, according to the variation in the height of the heel being trimmed. The greater the curvature of the heel being trimmed the greater the angle of the arms supporting the rand-guard with relation to the axis of rotation of the cutter-shaft, and the smaller the circle in which the rand-guard moves the quicker the movement of the said rand-guard in uncovering the heel.

My invention consists, essentially, in a heeltrimming machine containing a rotary outter, and having ahollow rand-guard provided with a guiding-edge combined with pivoted supporting-arms arranged parallel each to the other, whereby the rand-guard may be moved to uncover more or less of the acting edges of the knives of the cutter and yet leave the rand-guide at right angles to the axis of rotation of the shaft carrying the cutter, as will be described; also, in a heel-trimming machine, the rand or counter guard havinga guiding-edge, parallel pivoted arms, and a lug combined with back and front stops to determine the extent of movement of the said rand or counter guard and with a rotary cutter, to operate substantially as will be described; also, in a heel-trimming machine, the rand or counter guard having a guidingedge, parallel pivoted a rms,.and a lug and back and front stops cooperating therewith, and adjustable cross-slides combined with a rotary cutter, to operate substantially as will be described; also, a rotary cutter, a randguard having a guiding-edge, and pivoted arms tosupport the said rand-guard, and a hub provided with rand -cutters combined with a driver connected by a ball-and-socket joint to the spindle on the cutter-carrying shaft and adapted. to actuate the driver and hub, substantially as will be described.

Figure 1 is a plan View of a sufficient portion of a heel-trimming machine to enable my invention to be understood. Fig. 2 is a section thereof in the line 01:. Fig. 3 is an inner side or face view of the rand-guard, the randknives, their carrier, and the driver for the said carrier, the shaft of the driver being in section in the dotted line y across it in Fig. 2; and Fig. 4 shows one of the arms 6 detached. Fig. 5 is a partial face view of the hub e detached, together with one of the rand-cutters; and Fig. 6 is a section of Fig. 5 in' the line The yoke A, having suitable bearings for the rotating shaft A to which is attached the spindle B upon which is mounted the rotating cutter B, isand may be of usual construction. This yoke will be supported upon a column in usual manner.

The portion A of the yoke added by me to the usual yoke A has cut into it a dovetailed or other usual shaped guiding-groove, in which is inserted a cross-slide D of suitable shape to fit the said groove, the said cross slide being made adjustable longitudinally upon the bracket or portion A by a suitable screw, having a milled or other headD. The shank of the screw referred to takes bearing in a lug a, erected upon the bracket A the threaded portion of the said screw entering a threaded hole in the cross-slide D, the rotation of the screw, the clamping-nut a having been loosened, enabling the cross-slide D to be moved or adjusted more or less, such adj ustment providing for variations in the depth of the rand-cut. The cross-slide l) at its up per side has a projection D which is dovetailed in shape, and receives upon it the crossslide E, the latter being held in adjustment on the cross-slide D by the clamping-screw ta The cross-slide E has pivoted upon it at l) I) two yoke-like arms I) b", the said arms at their outer ends being jointed, as at I)" Z), to the rand-guard F, the said rand-guard being of cylindrical'shape and having an edg as c, which runs in the rand-grooves, or the grooves between the upper and the rand at the top of the heel. The screws Z), one at each side of the yoke-like arms D 1), are pointed screws, as represented in Fig. 2, so as to avoid friction One of the armsviz., the one 11 shown separately in Fig. 4-has an outwardlyprojectinglug 2, which is free to move to a lim ited extent between two adjustable stops 0 0 each held in a suitable lug erected upon the cross-slide E, the lower end of the said lug 2 having attached to it a spiral or other spring, as c, which normally acts to keep the lug 2 against the screw 0', (which I shall denomin ate the front stop,) to keep the rand-guard in its normal working position. The randguard in its normal position covers the cutter in such manner as to enable the usual blades of the cutter to cut that portion of the heel of the least height; but in the rotation of the heel from breast to breast in contact with the cutter, the heel at such time being pressed against the rand-guard acts through the randcrease, (which from the breast to the back of the heel is in a curved line,) upon the guidingedge 0 of the rand-guard and pushes the same laterally to uncover more of the knives as the cutter works upon the heel from the breast to the rear part of the heel and vice versa, the rand-crease while the top-lift end of the heel bears against the usual back guard (Z of the cutter, automatically moving the rand-guard toward and from the said back guard (Z, and, as stated, uncovering more or less of the edges of the blades of the rotary cutter. The screw 0 serves as a backstop for the lug 2, and determines the extent to which the randguard may move as it is pushed away by the rand-crease from the back guard (Z.

In factories the heels being trimmed, espeeially those in connection with ladies work, vary very materially in curvature, and to provide for these variations in curvature the rand-guard has to be moved 01f more or less quickly, and also has to be moved in arcs of different circles according to the particular heel being trimmed. To provide for this adjustment and enable the rand-guard to be moved in the proper time and direction, I have employed arms b l)" to support the randguard; and the f ulcra of the said arms through the two cross-slides mentioned may, by the adjustment of the said cross-slides, one or both with relation to the bracket (L be placed in such position that the angle of the said arms with relation to the axis of the rotating shaft A maybe more or less acutethe more acute the angle the quicker the movementol. the rand-guard as it is acted upon by the rand-crease of the shoe being trimmed.

It will be noticed that the employment of two arms 11 b of equal length-that is, between their pivotal points and the points where they are connected with the rand-guard-enables the rand-guard to be kept always with its face at right angles to the axis of the rotating shaft A, which is essential for proper work.

The rand-guard, made as a cylinder, receives within it and forms a bearing for a hub e, the shape of which is best shown by the longitudinal section thereof in Fig. 2. This hub has a shoulder, as 8, to fit a like-shaped seat in the cylinder-body of the rand-guard, and the said hub is retained in place by a collar 6, applied to its rear end by suitable screws, the said collar (see Fig. 2) abutting against the outer end of the cylindrical body of the rand-guard. The hub c referred to is slotted, as at e, at diametrically opposite points to receive within it the roller or other studs 10, projecting fro m a driver c, fast upon a short shaftf, connected by a universal joint of any usual or suitable construction with the spindle B, the said joint, as herein shown, consisting, essentially, of a ball-like termination at the end of the shaft, which receives within it a pin, the hole in the ball being of double conical shape. This shaft f, having a ball-and-socket or a substantially universal joint connection with the shaft carrying the cutter and also connected with the hub e, as described, enables the said hub to be ro' tated at the same speed as the cutter, but at the same time leaves the hub free to be moved toward the end of the cutter-actuating shaft to cover or uncover more or less of the acting edges of the blades of the cutter according to the part of the heel being trimmed, the said hub moving off and on the cutter in a circular path, which it could not do were it not for the universal-joint connection.

Instead of the particular joint herein shown I may employ any other usual or well-known form of ball-joint. The shaft f, it will be 110- ticed, will be rotated in unison with the shaft A, and through the driver the hub e will be rotated wi thin the cylindrical portion of the mudguard, and this hub will be driven positively at all times notwithstanding the movements of the rand-guard, as described, uncovering and then again covering more or less of the rotary cutter.

The hub c at its front side has attached to it by suitable screws suitable rand-cutters, as g, which cutters in the rotation of the hub act to bevel that portion of the sole next the counter, leaving a beveled edge, which is de nominated the rand.

I have notherein particularly described the rotary cutter B or the shape of its blades, as they may be of any usual form, the blades varying according to the curvature of the heel. The hub e at its front end, as shown IIS best in Figs. 5 and 6, has projecting lugs t, herein shown as grooved in the arc of a circle to receive an arc-shaped fin or projection, as g, at the rear side of the rand-cutter g, the latter being held in position by means of a screw g (Shown mostlyin dotted lines Fig. 6.) As herein shown, the inner and outer edges of the rand-cutter are in arcs of concentric circles. The projection on the rand-cutter entering the groove, as described, prevents any vibration or twisting movement of the rand-cutter with relation to the 11 uh.

I claim 1. In a heel-trimmin g machine, a rotary cutter for the heel and a hollow rand or counter guard having an edge, as c, to enter the randcrease, combined with pivoted supportingarms b 17 of equal length and arranged parallel each to the other, whereby the said randguard in all its different positions, Whether uncovering more or less of the acting edges of the knives of the cutter, always occupies the same angular position with relation to the axis of rotation of the shaft carrying the heelputter, substantially as described.

2. In aheeltrimming machine, the rand or counter guard having a guiding-edge, as c, the parallel pivoted arms 12 b and the lug 2, combined with back and front stops to determine the extent of movement of the said rand or counter guard, and with arotary cutter, to operate substantially as described.

3. In a heel-trimming machine, the rand or counter guard having .a guiding-edge, as 0, parallel pivoted arms 11 Zr, and the lug 2, and back and front stops co-operating therewith, and adjustable cross-slides E D, combined with a rotary cutter, to operate substantially as described.

t. The rotary cutter, the shaft A and spindle, the rand-guard having a guiding-edge,

as c, and pivoted arms to support the said rand-guard, and a hub 6, provided with randcutters, combined with the shaft f, pivoted at its inner end to the said spindle, and the driver carried by the said shaft and engaging and actuating the said hub and randcutter, substantially as described.

5. In a heel-trimming machine, the rotary cutter, its shaft and spindle B, and the hollow rand-guard having a sleeve-like hub, and a support therefor independent of the support for the rotary cutter-shaft, combined with a rand-cutter, the hub of which is extended into and takes bearing in the sleeve of the said guard, and the shaft f, jointed at its inner end to the said spindle, substantially as described.

6. In a heel-trimming machine, the rotating cutter m, its actuating-shaft, the independent rand-guard, and the hub e, supported by it and having a rand-cutter, combined with the short shaft f, loosely jointed to and so as to rotate in unison with the cutter-actuating shaft, and with a driver loosely connected to the said hub to rotate the same, and at the same time permit the hub, together with the rand-guard, to be moved to cover or uncover more or less of the acting surfaces of the blades, for the purpose set forth.

7. The combination, in a heel-trimming machine, of the lug or projection 15, the rand-cutter, arc-shaped projection, and arc-shaped groove, to operate substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY W. WINTER.

Witnesses:

G. W. GREGORY, J AS. H. CHURCHILL. 

